Question number 7, part c 6. Yesterday's temperature was 40°F. Today it is 80°F. Bill tells Sue that itis twice as hot today. Sue disagrees. Do you think Sue is correct orincorrect? Why or why not?7. An aqueous solution (salt dissolved in water) is contained in a 100.0-mL volumetric flask. The temperature of the solution is 20.0°C.a. Calculate the temperature of the solution in degrees Fahrenheit.b. Calculate the temperature of the solution on the Kelvin scale.c. When the solution is heated, its density decreases. How would thevolume of the solution change if the solution is warmed to 25.0°C?d. When the solution is cooled, its density increases. How would thevolume of the solution change if the solution is cooled to 15.0°C?e. What does the information conveyed in parts (c) and (d) tell youabout the proper use of volumetric flasks?f. Is the density of the solution an intensive property or an extensiveproperty?8. Create a concept map that illustrates the relationship between scientificnotation and unit prefixes.9. A balloon is filled with helium at a temperature of 25.0°C.a. Calculate the temperature of the helium in degrees Fahrenheit.b. Calculate the temperature of the helium on the Kelvin scale.c. Gas density decreases with increasing temperature. What would youobserve if you heated the balloon?d. Gas density increases with decreasing temperature. What wouldyou observe if you cooled the balloon?e. Is helium a pure substance or a mixture?f. Is helium an element or a compound?.o. The diameter of an aluminum atom is 250 picometers (pm)(1 pm = 10-¹2 m). How many aluminum atoms must be placed end toend to make a "chain" of aluminum atoms 1 ft long?

Density is defined as the mass per unit volume.

mL volum a. Calculate the temperature of the b. Calculate the temperature of the solution on the Kelvin C. c. When the solution is heated, its density decreases. How would the volume of the solution change if the solution is warmed to 25.0°C? d. When the solution is cooled, its density increases. How would the of the solution change if the solution is cooled to 15.0°C? in parts (c) and (d) tell you

mL volum a. Calculate the temperature of the b. Calculate the temperature of the solution on the Kelvin C. c. When the solution is heated, its density decreases. How would the volume of the solution change if the solution is warmed to 25.0°C? d. When the solution is cooled, its density increases. How would the of the solution change if the solution is cooled to 15.0°C? in parts (c) and (d) tell you

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter12: Solutions

Section: Chapter Questions

Problem 12.4QE

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Similar questions

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